Fence with auxiliary positioning device for a saw machine

Abstract

A fence with auxiliary positioning device for a saw machine adapted for installation on a worktable having a front portion and an opposite rear portion. The worktable has a plane for supporting a workpiece. The fence includes a base disposed on the rear portion and at least one auxiliary positioning device. The base includes at least one panel, and the panel has a first planar surface which extends toward the front portion and is perpendicular to the plane. The auxiliary positioning device includes a fixing member and a positioning post. The fixing member is disposed on the base and is parallely slidable relative to the first planar surface, and the positioning post is disposed on the fixing member. The positioning post is convertible relative to the panel between a collapsed position and an extended position having a second planar surface which is perpendicular to the first planar surface and the plane.

What is claimed is: 
     
         1 . A fence with auxiliary positioning device for a saw machine, adapted for mounting to a worktable of the circular saw, the worktable including a plane for supporting a workpiece, and the worktable having a front portion and a rear portion, the fence with auxiliary positioning device comprising:
 a base disposed on the rear portion of the worktable, the base having at least one panel disposed thereon, the panel having a first planar surface formed thereon, the first planar surface extending toward the front portion and being perpendicular to the plane of the worktable; and   at least one auxiliary positioning device having a fixing member disposed on the base and parallely slidable relative to the first planar surface, and a positioning post disposed on the fixing member;   wherein the positioning post is convertible relative to the panel between an extended configuration and a collapsed configuration, wherein in the extended configuration, the positioning post is oriented toward the front portion and extends beyond the first planar surface such that a second planar surface which is perpendicular to the first planar surface is formed on the positioning post, and wherein in the collapsed configuration, the positioning post is retracted and oriented toward the rear portion of the worktable such that the positioning post does not extend beyond the first planar surface.   
     
     
         2 . A fence with auxiliary positioning device for a saw machine as claimed in  claim 1 , wherein the panel of the base includes a lower panel and an upper panel slidably disposed on the lower panel adapted for accommodating the fixing member, and a locking member disposed on the base for selectively fixing the upper panel to the lower panel, such that the upper panel and the lower panel together form the first planar surface. 
     
     
         3 . A fence with auxiliary positioning device for a saw machine as claimed in  claim 2 , wherein the base includes two panels which are spacedly arranged, the first planar surfaces of each panel are co-planar, and the fixing members are respectively disposed on the upper panels. 
     
     
         4 . A fence with auxiliary positioning device for a saw machine as claimed in  claim 1 , wherein the fixing member of the auxiliary positioning device includes a locking post, the positioning post is slidably mounted to the fixing member, and the positioning post includes a column member having a positioning slot longitudinally defined therein for slidably accommodating the locking post. 
     
     
         5 . A fence with auxiliary positioning device for a saw machine as claimed in  claim 4 , wherein the locking post is a threaded bolt. 
     
     
         6 . A fence with auxiliary positioning device for a saw machine as claimed in  claim 1 , wherein the fixing member of the auxiliary positioning device includes a locking post for pivotally mounting the auxiliary positioning device to the fixing member;
 wherein, in the extended configuration, the positioning post is extended toward the front portion of the worktable, and in the collapsed configuration, the positioning post is parallel to the panel.   
     
     
         7 . A fence with auxiliary positioning device for a saw machine as claimed in  claim 6 , wherein the fixing member has a limiting stud disposed on a top thereof for restraining the positioning post in the extended configuration, and the positioning post has a notch defined therein and located adjacent to the fixing member;
 wherein in the collapsed configuration, the notch engages with the limiting stud.   
     
     
         8 . A fence with auxiliary positioning device for a saw machine as claimed in  claim 1 , wherein the positioning post of the auxiliary positioning device includes a coupling member disposed on the fixing member, and a blocking member pivotally engaged to the coupling member;
 wherein in the extended configuration, the blocking member is pivotally rotatable relative to the coupling member between a first position and a second position, such that the blocking member extends from the coupling member and is located away from the worktable when the blocking member is at the first position, and the blocking member is perpendicular to the coupling member and is located proximate to the panel and the worktable when the blocking member is at the second position.